List price is $2500, wholesale prices are available to buyers of +10 units.
Real efficiency numbers...no. Theoretical, yes. The motor peaks at 80%, and has over 70% for most of the operation range. Further more, there are no reduction loses, only two low speed bearings, and a single lip seal on the shaft. No load on the bench, the motor draws 200mA to start spinning, and about four amps at full throttle. Every boat will be a little different of course, with wind, bottom condition, and prop matching, but I am certain it is very efficient. From what posts do include numbers, it seems this motor can do on 24v what most do with 48v. Again, comfortable speed with 40 to 60amps.
Arby
____________
From: derfessor <fred.rosse@wgint.
To: electricboats@
Sent: Friday, July 10, 2009 7:58:18 PM
Subject: [Electric Boats] Re: Direct drive brushless DC motors now available
>
> I invite your questions and comments. This design is constructed provide many, many years of reliable service, with the fastest wearing part, a double row sealed bearing (3305) resolving the prop shaft thrust, replaceable without disturbing the installed motor. The standard warranty is five years, full replacement, excluding over-voltage (<30vdc), reverse polarity, and shipping. Rebuilding damaged motors can be accomplished by returning the motor in the original shipping container. I am offering an unlimited lifetime warranty with the a-fore mentioned conditions on the first ten units, five of which are now ready to ship from Thunderstruck- EV. Contact Mark in Sales during business hours.
>
> Be Well,
> Arby
>
How much does this setup (motor and controller) cost in US $?
Do you have any real motor efficiency numbers?
Thanks in advance for any info.
[Non-text portions of this message have been removed]
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